CN1099102C - 光学头 - Google Patents
光学头 Download PDFInfo
- Publication number
- CN1099102C CN1099102C CN96108957A CN96108957A CN1099102C CN 1099102 C CN1099102 C CN 1099102C CN 96108957 A CN96108957 A CN 96108957A CN 96108957 A CN96108957 A CN 96108957A CN 1099102 C CN1099102 C CN 1099102C
- Authority
- CN
- China
- Prior art keywords
- beam splitter
- polarized light
- light
- optical head
- light component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1395—Beam splitters or combiners
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1356—Double or multiple prisms, i.e. having two or more prisms in cooperation
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10532—Heads
- G11B11/10541—Heads for reproducing
- G11B11/10543—Heads for reproducing using optical beam of radiation
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1362—Mirrors
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP150858/95 | 1995-05-25 | ||
JP7150858A JPH08321088A (ja) | 1995-05-25 | 1995-05-25 | 光学ピックアップ |
JP150858/1995 | 1995-05-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1146042A CN1146042A (zh) | 1997-03-26 |
CN1099102C true CN1099102C (zh) | 2003-01-15 |
Family
ID=15505919
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN96108957A Expired - Fee Related CN1099102C (zh) | 1995-05-25 | 1996-05-25 | 光学头 |
Country Status (4)
Country | Link |
---|---|
US (1) | US5701287A (ko) |
JP (1) | JPH08321088A (ko) |
KR (1) | KR100417936B1 (ko) |
CN (1) | CN1099102C (ko) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19544966A1 (de) * | 1995-12-04 | 1997-06-05 | Thomson Brandt Gmbh | Gerät zum Beschreiben und/oder Lesen optischer Aufzeichnungsträger unterschiedlichen Aufbaus |
KR100252944B1 (ko) * | 1997-02-25 | 2000-04-15 | 구자홍 | 광픽업장치 |
US6147953A (en) * | 1998-03-25 | 2000-11-14 | Duncan Technologies, Inc. | Optical signal transmission apparatus |
JP2007035114A (ja) * | 2005-07-25 | 2007-02-08 | Konica Minolta Opto Inc | 偏光分離素子と光ピックアップ装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5077723A (en) * | 1986-12-25 | 1991-12-31 | Sony Corporation | Optical pick-up apparatus which utilizes plural prisms |
EP0627733A1 (en) * | 1993-06-02 | 1994-12-07 | Matsushita Electric Industrial Co., Ltd. | Optical head device and optical information apparatus |
EP0631279A2 (en) * | 1993-06-25 | 1994-12-28 | Nec Corporation | Head device for magneto-optical disk |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05109143A (ja) * | 1991-10-18 | 1993-04-30 | Sony Corp | 光学ピツクアツプ装置 |
JPH06168463A (ja) * | 1992-09-18 | 1994-06-14 | Ricoh Co Ltd | 光ヘッド |
JPH06176426A (ja) * | 1992-12-08 | 1994-06-24 | Sony Corp | 光学ピックアップ装置 |
JP3541893B2 (ja) * | 1993-08-06 | 2004-07-14 | ソニー株式会社 | 光磁気記録媒体再生装置 |
JP3392206B2 (ja) * | 1994-03-11 | 2003-03-31 | パイオニア株式会社 | 光ピックアップ |
-
1995
- 1995-05-25 JP JP7150858A patent/JPH08321088A/ja active Pending
-
1996
- 1996-05-22 US US08/651,373 patent/US5701287A/en not_active Expired - Fee Related
- 1996-05-23 KR KR1019960017593A patent/KR100417936B1/ko not_active IP Right Cessation
- 1996-05-25 CN CN96108957A patent/CN1099102C/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5077723A (en) * | 1986-12-25 | 1991-12-31 | Sony Corporation | Optical pick-up apparatus which utilizes plural prisms |
EP0627733A1 (en) * | 1993-06-02 | 1994-12-07 | Matsushita Electric Industrial Co., Ltd. | Optical head device and optical information apparatus |
EP0631279A2 (en) * | 1993-06-25 | 1994-12-28 | Nec Corporation | Head device for magneto-optical disk |
Also Published As
Publication number | Publication date |
---|---|
US5701287A (en) | 1997-12-23 |
KR100417936B1 (ko) | 2004-04-21 |
CN1146042A (zh) | 1997-03-26 |
KR960042579A (ko) | 1996-12-21 |
JPH08321088A (ja) | 1996-12-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030115 Termination date: 20100525 |